FM Towns Marty joypad and cd drive and floppy help

HI every one,

I bought 2 fm towns marty's cheap (not from ebay) 1 works a treat except for the floppy drive needs new belt, but the other when you put a cd game in the lase goes up and down but the spindle dont spin the cd any ideas how to test or repair to see if it is the motor. also does any one know if what size belts do i need to fix the floppy drives,

also does any one know how to make a megadrive pad to marty controller adaptor i tried myself but i could not get it working i have both a 3 button and 6 button megadrive pad or can any one sell me a marty controller ?

any help or advice would be appreciative