Pax feedback to staff (BGB) wheel soundheard at car 1521. Staff (BBT) checked and confirmed no abno rmalities. ~~~~~ 1521 to carry out wheel profiling Pax feedback to staff (BGB) wheel sound. Staff (BBT) confirmed no abnormalities. 1521 bogie #2 having wheel flat noise.  1521 B1 & A4 wheels found having wheel flat         (15mm x 15mm). Dump v/v checked - OK. Wheel profiling done by Teo KP and Kassim on 30/10/2020. A1,A2,A3 pitting 3x3mm. B1,A4,B4 w/f 30x40mm. 1521 carbody ht adjustment To carry out carbody ht adjustment according to EMU/CM1/002 checklist and clean M2 car coupler pins. Carbody ht adjustment done by Teo KP, Kassim, Nizam on 30/10/2020.