I wanted to ask if any members have encountered something similar. I installed hydraulic tensioners in my 2006 103 engine. While doing this, I changed to Andrews 31N cams. After trading it in (another story), another fellow looked at buying it from the dealership, but wanted an extended service plan. The sales manager and the service manager said Harley would not stand behind a service plan if the engine failed due to the cam change. The 31N cams are almost identical to the stock SE-253 cams. If this is valid, it could affect others doing aftermarket cam conversions who would later like to purchase extended service plans. Any insights would be helpful.