RPM clock doing weird things

[solorider]

Any idea what size the bolts are? they look like they could be about an M4 but hard to tell with them stuck in lol.. just thinking i will change them for some stainless ones IF i ever get them out. but would be nice to have them ready to just replace them.

Funny enough i was discussing with a mate about the BMF but alas i am busy this weekend so i am unable to make it 

they are m6,i think the short cover screws are 10mm long which i had to use a washer and the inner cover screws are longer but you can get away with 10mm,the cover screws will bottom out if they are too long