slow starting issues

hi my names luke.
so ive got a 2001 400Fe with a 501 engine, (unsure of the year of engine)
its not too bad to start on the kick start .. so my problem is with the E start, someone removed the manual decomp lever cable before i owned it) i have re fitted one and set it to what i think is ok, i had the engine at TDC and then i have 2mm of play in the decomp on the head, i have a good battery which is brand new when i try to start the bike it wont crank enough to start the bike, it may turn half a rotation then it will stop. even if i hold the decomp lever fully in (it will kick with ease) but really struggles to spin the engine at a decent rate, ... would you say the starter if fubar .. if so is there any rebuild kits ? also can anyone tell me what battery i should have?
thanks guys

thanks

cheers fella

hi taffy, id like to give you a call, its late now tho so i appriciate that and will wait till the morning, i will call you if you give me a number,
i will go and get another new battery tomorrow, is the CTZ7S the one to use or can i use any others ?
thanks luke

hi just realised there is a link to your shop, ill call you tomorrow.