have you folks heard about the condition which causes burning of the 
valves due to loose valve guides, caused by "poor octane" ratings in the 
fuel being made today? I cannot beleive that a Machine shop cant STOP all
guides from getting loose with design, or rollpins or taper pins. You can 
make a 21 inch gun breech gas proof in any condition whats so hard about 
an 85 mm bore under much less compression? Can you clear up my 
understanding of the problem?

Archie   at dukbush@aa.net