This is just another of my hobby trucks so it's not a service availability issue. Cost is really not a prohibitive issue to repair correctly, but no need to expend the funds unless necessary. What started this is that I couldn't get the truck to idle as smoothly as it should, and was down on power a little bit. When accelerating, the pull seemed "sluggish" all through the power band. I pulled all the nozzles which were rebuilt last year, and ran another compression test both dry and wet with excellent, even results. All eight cylinders are well within 5% of each other. I then pulled the pump and installed a brand new one, (not rebuilt) and the truck idles much better, and smoother. I then shipped the pump to my buddy in Wisconsin for evaluation. I haven't driven the truck with the new pump installed. It's raining now with no paint on the cab, (bare steel). This is the truck that will get the Detroit engine also so I'm at a crossroads. Trouble is that I never know when another truck may come along just itching for a good V8 installation........ This engine really does run well and is a strong puller. Thanks, Rob