Replacing clutch plates, a pictorial

[Milktown]

HELP!! first off this is my first post (tho I've been lurking for a while) so hello to all. I'm am the proud owner of a 79 gs425 and a 78 gs750. Today I was replacing the clutch plates on the 750. Was almost done, tightening the clutch spring bolts when the last one broke off halfway inside the threaded cylinder thingy. I tried drilling asmall hole in the bit of the screw that was left in there but it broke off at a funny angle so I couldn't get the bit to bite. So the next thing my genius mind decided to do was drill the whole thing out and cut new threads. Same problem as before the bolt broke off at such an angle that I can't get a centered hole going. I got to a point where I just stopped before I cause any more damage as you can tell I am a novice mechanic at best. Any suggestions on where to go from here?

 

[Nessism]

HELP!! first off this is my first post (tho I've been lurking for a while) so hello to all. I'm am the proud owner of a 79 gs425 and a 78 gs750. Today I was replacing the clutch plates on the 750. Was almost done, tightening the clutch spring bolts when the last one broke off halfway inside the threaded cylinder thingy. I tried drilling asmall hole in the bit of the screw that was left in there but it broke off at a funny angle so I couldn't get the bit to bite. So the next thing my genius mind decided to do was drill the whole thing out and cut new threads. Same problem as before the bolt broke off at such an angle that I can't get a centered hole going. I got to a point where I just stopped before I cause any more damage as you can tell I am a novice mechanic at best. Any suggestions on where to go from here?

I recommend a new center clutch hub. Shouldn't be hard to find from either here in the parts wanted forum or ebay.

http://cgi.ebay.com/ebaymotors/1978...rcycles_Parts_Accessories&hash=item35b1816c0f