i bought a tap and die set so i could tap some more grub screws into the timing pullys, which haad the wrong diameter holes, and after drilling and buying the set and the grubs, i read the comment on my twitter page about using some material thats half a mm thick to make a collar… I got an milk bottle and cut it up, created the collars and hey presto, its perfect.

Bought:
Tap and die set = £9.99
Grubs 12 for £3

solution
Bit of an old milk bottle:

Cost 49p for the milk bottle in the first place!

LOL

oh well… they are always handy to have i guess…