The 261" engine valves are set at: .006 & .020 (hot) for use in comercial vehicles. Anything close to that (cold) is okay.
It's best to wait till the valves 'seat' before the final seting though.
If you have a (non stock) cam then go by what the grinder says.
The oil filter issue can be hazardous, so be carfull there.
Good luck.
