I don't think a three ft bar on a 3mm allan screw is advisable,a tad ott me thinks
![wink wink](./images/smilies/icon_e_wink.gif)
.Three of the wee buggers I have managed to undo with heat and aplying gentle preasure using a ring spanner on an allan key stud,while gently tapping with a "soft" hammer,I then tried the centre punch option but that didn't work either!!,and two of them have "rung off"
![evil evil](./images/smilies/icon_evil.gif)
,I have now drilled the heads(almost) off the remaining two and hope to tap the cush drive face plate from the other side once all the clutch housing is off the g/box main shaft,and therin lies a problem,Nortons(in their infinate wisdom)decided to put a 5/8(19mm) nut on the end of said shaft that is only acsessable through a hole in the Cush Drive Face Plate that isn't large enough for a normal diametre socket to pass through
![cry cry](./images/smilies/icon_cry.gif)
,hence the grief having to get the Face Plate off!! but all is not lost,I have a biker buddy who has a lathe and has offered to skim down a socket for me
![smiley smiley](./images/smilies/icon_e_smile.gif)
,J.B.