GP handlebars the grinding of.

[10 inch Terror]

Hi all I've just received a new GP top and bottom headset and they are rougher than a badgers a*#e and the top isn't a particularly good match. Would it hurt if I ground some of the flashing of to get them to fit a bit better and while I'm at it could I also grind off the four lumps on the bottom? I think these are for mirror mounts. Obviously I won't grind too much off or none at all if it will compromise the strength of the headset.

[RICSPEED]

grind the bosses off by all means but with out the head set in front of me I cant really say how or where you should fettle them and also remember to match up the rim at the same time

[10 inch Terror]

grind the bosses off by all means but with out the head set in front of me I cant really say how or where

Cheers ricspeed I'll post some pictures when I get a chance.

[corrado]

With the two halves bolted together you should be able to see where they touch and where there are gaps looking at the inside. I use needle files to remove material where they touch until the gaps get smaller and smaller. Sometimes shaving material from the outer sides to fit in the recesses. I wouldn't grind anything though. With enough patience and enough time you can get them to fit pretty well. You may need to "shape" the 2 holes where the screws go through to bolt the 2 pieces together as they rarely line up. Actually that's probably the best place to start, I usually end up with "ovalised" holes. I've done a few but it's a good job I don't charge myself an hourly rate, I'd be bankrupt.
I'm convinced that the 2 halves are made by different companies.