Rail problem on ts3660

[resortwoodwork]

I have aligned the front and back rails to each other so that i get the recomended 8 pages of clearance under the fence for my table saw 3660. Everything is fine with that, but when i used my miter guage fence the other day the bar on the miter fence with the round washer/t-slot thing it hits the back rail. So i lowered the back fence to compensate for that and now I barely have any clearance on the back side of the rip fence and the table.

Has anyone had this problem? any info would be great.
Thanks

[rofl]

you really only need enough clearance that you don't ever bind while moving the fence.

If the fence operates smoothly I wouldn't worry about a specific amount of clearance unless you have too much.