ACROSS
1 - Knock down: let kits roll off! (7) - SKITTLE*
5 - Solemn class by little boy (6) - {FORM}{AL}
9 - Put together broken trifle learner discarded (5) - REFIT(-l)*
10 - Sight from an optical instrument cut short (9) - SPECTACLE(-s)
11 - King disoriented limner in a Russian citadel (7) - {K}{REMLIN*}
1 - Knock down: let kits roll off! (7) - SKITTLE*
5 - Solemn class by little boy (6) - {FORM}{AL}
9 - Put together broken trifle learner discarded (5) - REFIT(-l)*
10 - Sight from an optical instrument cut short (9) - SPECTACLE(-s)
11 - King disoriented limner in a Russian citadel (7) - {K}{REMLIN*}

12 - Cut a cutter cut (7) - SCISSOR(-s) Nice clue
13 - A hollow part to lady without notice in a fitting manner (5) - {A}{P(-ar)T}{L(-ad)Y}
14 - Fitful one with a gun back in car (9) - {I}{R{REGUL}{A}<-R} ) I don't think we can classify a Luger as a gun, it is a pistol
13 - A hollow part to lady without notice in a fitting manner (5) - {A}{P(-ar)T}{L(-ad)Y}
14 - Fitful one with a gun back in car (9) - {I}{R{REGUL}{A}<-R} ) I don't think we can classify a Luger as a gun, it is a pistol

16 - Gathers Ma blesses freely (9) - ASSEMBLES*
19 - Fun in second harbour (5) - {S}{PORT}
21 - Resented putting a Dickens character in alternate gadi (7) - G{RUDGE}D
23 - One has a bit of surprise in real transformation by one foreign national (7) - {I}{S}{RAEL*}{I}
24 - Changeless, let Mumbai manifest itself (9) - IMMUTABLE*
25 - Small periods of time for Kerala’s leader in foreign city (5) - {MINS}{K}
26 - So a din is created about a beau (6) - ADONIS*
27 - American in disgrace to keep going (7) - S{US}TAIN
DOWN
1 - Profits result when you do this with a trader (6,1,7) - STRIKE A BARGAIN [CD]
2 - Fifty in poison case change tone (7) - INF{L}ECT
3 - Completely bring together child and mate (7) - {TOT}{ALLY}
4 - Important to correct lateness as one comes in (9) - ESSENT{I}AL*
5 - Worries about decorations? (5) - FRETS [DD]
6 - Abandoning sailor takes time (7) - RAT{T}ING Nice clue
7 - It results when a charge is made (7) - ACCUSAL [CD] Never knew this word, had heard of accusation only.
8 - Phobic Tamilian leader, unwell, admits mistake (6-8) - {T}{ERROR}-{STRICKEN}
15 - It results when you don’t polish from time to time (9) - RUSTINESS [CD]
17 - Quartered in Dharavi, say (7) - SLUMMED [CD]
18 - Got mean, using explosive device (7) - MEGATON* I don't think it can be classified as a device.
19 - Acts niggardly with small folds (7) - {S}{CRIMPS}
20 - One in a canoe drifting in South Seas region (7) - OCEAN{I}A*
22 - They result when you use the plastic (7) - DEBTS [CD]
19 - Fun in second harbour (5) - {S}{PORT}
21 - Resented putting a Dickens character in alternate gadi (7) - G{RUDGE}D
23 - One has a bit of surprise in real transformation by one foreign national (7) - {I}{S}{RAEL*}{I}
24 - Changeless, let Mumbai manifest itself (9) - IMMUTABLE*
25 - Small periods of time for Kerala’s leader in foreign city (5) - {MINS}{K}
26 - So a din is created about a beau (6) - ADONIS*
27 - American in disgrace to keep going (7) - S{US}TAIN
DOWN
1 - Profits result when you do this with a trader (6,1,7) - STRIKE A BARGAIN [CD]
2 - Fifty in poison case change tone (7) - INF{L}ECT
3 - Completely bring together child and mate (7) - {TOT}{ALLY}
4 - Important to correct lateness as one comes in (9) - ESSENT{I}AL*
5 - Worries about decorations? (5) - FRETS [DD]
6 - Abandoning sailor takes time (7) - RAT{T}ING Nice clue
7 - It results when a charge is made (7) - ACCUSAL [CD] Never knew this word, had heard of accusation only.
8 - Phobic Tamilian leader, unwell, admits mistake (6-8) - {T}{ERROR}-{STRICKEN}
15 - It results when you don’t polish from time to time (9) - RUSTINESS [CD]
17 - Quartered in Dharavi, say (7) - SLUMMED [CD]
18 - Got mean, using explosive device (7) - MEGATON* I don't think it can be classified as a device.
19 - Acts niggardly with small folds (7) - {S}{CRIMPS}
20 - One in a canoe drifting in South Seas region (7) - OCEAN{I}A*
22 - They result when you use the plastic (7) - DEBTS [CD]

