I'm having some problems reassembling a French Mitchell 308 I took apart to re-grease. The spool stutters, for lack of a better term, when it reaches the top and bottom as it goes up and down. Is it supposed to? (It seems to run smoothly like that, it just looks strange). Is there any special way to put in the planamatic gear? I'm very familiar with Mitchell 300's but the 308 seems more intricate.