Chain/sprocket info needed again...

[1KPerDay]

Chain's been making a 'thu-thunk' noise on takeoff. Found it was
loose. Tightened it; 2 weeks later the thunk is back. I figure the
chain bushings are on their way out. 21K miles.

Soooo... if you'd be so kind as to suggest the bestest, cheapest,
awesomest chain and sprockets. I understand the ZRX1100 countershaft
sprocket will fit... is the ZRX1200 the same?

Thanks,

-- 
Utah Jeff
'96 SheePz1100