I wouldn't put another D30 in. HP 44s aren't too hard to find and you may well break that too. My uncles Fred and Jimmy Brune break/broke D44 shafts regularly and Jimmy ripped a steering knuckle off at least once that I can remember. They are/were on 35s and IH Scouts but a 33 isn't *that* much smaller. The peace of mind/expense ratio of D30 vs D44 leans D44 every time.