And I thought I knew model 15 reasonably well. I guess I have to pick one completely appart and rebuilt it to be able to claim anything like that. Does the wick have any obvious funciton? I know the tiny felt bit near the hook and race on 66s and 99s can be ignored if we just remember to oil the parts often enough. Other places we just have to do the job thoroughly for things to run as they should. It's a reminder to carefully detect all oil points and do the job well.