Metzger's shop is only 5 minutes from my Mom and Dad's. Dad works at Kenworth in parts and calls on them all the time (You should see thier fleet of W-900's! Very impressive). They have been having problems with the Belle all year, she just never ran 'right'. They finally tore her down a couple of months ago and found that several of the cam lobes had been seriously worn. I haven't heard any news in awhile as to whether they got her back together yet.
BTW, in the air cleaner department, they don't use one! They also have integrated some kind of computer to follow the fueling and boost numbers for each run. I hope to make it into their shop next time I'm home from school and shoot the breeze for awhile. Oo.
Eric