I mostly use metal reels (nikor) for 220. It just takes a bit of practice to get the film in the groove and not have it buckle. The best suggestion is to use a developed roll or just waste an unexposed roll for practice.(posted 8693 days ago)With the plastic reels it is very important that they be dry and clean. If you wash your films while on the reel, take them off the reel to use Photoflow. They'll clen pretty well with an old toothbrush and if you have to use them twice in one session, get a hairdryer and get them completely dry. Again, practice is necessary.
One other note. I've had NO luck using the newer white plastic reels, like the Paterson reels. The old Yankee reels work very well.
Good luck,
chuck k