o.k. here's two : 1 , don't let your two year old grandaughter help you work on the truck when she's carrying a 3 pound sledge , it hurts when you use your hand as a stop between the hammer and the fender , 2 , when we replaced the bent valve and guide , and the retainer clips we could not find a spring compressor to work inside the block while in the truck , and i really didn't want to wait for one too get here . went to the local oreilly's and bought a valve spring compressor for small engines that had two "cups " on the ends , and geuss what , it worked . i'll try and find the part no. / receipt if you wanna know . it was for a briggs .