My SC Auto has been off the road for 2 years. The engine has been professionally rebuilt by a shop that specialises in older equipment. I've probabably done 2 - 3 hundred miles since she's been back on the road & I've been chasing a problem with rough idle and poor bottom end performance. Not all bad, she cruises beautifully and runs at 81 degrees C I still have some carb work to do as she is running very rich. I checked the valve clearance (dead cold) and came up with the following: No 1 Inlet 0.005" , Exhaust 0.010" No 2 Inlet 0.005", Exhaust 0.011" No 3 Inlet 0.005' , Exhaust 0.012" No 4 Inlet 0.007", Exhaust 0.009" Compression test shows a consisitent 150PSI across all pots. Will these tight clearances contribute to the rough idle/poor bottom end?