i need some help i've been having problems with my distributor the little bolt that holds my rotor on keeps coming off i've tried everything from drilling a hold all the way throu and putting a bolt with A lock nut on the other end to putting lock tight on the bolt and it seems to keep coming off. i recently put a new distributor on and it seems to be working fine now but my gas milege has gone down alot. what can i do? also it hasn't been idoling very high when i start it it is at almost 2000 rpms and when it warms up it seems fine but when i push the clutch in it goes to about 200 and then goes up to about 800 for a while it was surging like it would go to about 1100 and drop all the way to 100 then go back up and drop again while it was idoling and it would keep doing it. please help if anyone knows whats going on please help.