I am getting ready to install a woods 22 XE, Fueling 4017 Race series lifters, SE pushrods ( suggested by Bob Woods ) new HD cam plate and latest oil pump ( suggested by Bob Woods ) S&S cam chain tensioner, fullsax MX header, Rinehart DBX 40 ( rebaffled with Fullsac 2" perforated baffle suggested by Fullsac Performance ) . My question is should I pull the oil pan to clean it out completely. I do have a electric pump that I can put the hose down into the oil fill and pull all the oil out that way after draining, I am also changing the oil control valve out to the S&S, ( better quality) and plan on evacuating the oil cooler withy my pump at that time also before attaching the hose to the new OCV. Will these measures be sufficient or do I need to pull the pan. Thank you. PS: this is my first time in a HD engine.