Odd OT here, I just got a phone call from the Junior High Band Director in my area and she has been trying to get the wheels off her 32"; Yamaha Timpani. Tried to remove the wheels the way I do at the university here and it doesn't work on ours. Anyone know off the top of their heads how to remove the wheels to get it through a door. Ours at ISU just pull off and have a shaft with a rubber grommet around it. One good yank and they are off. Not so with these. They were purchased in the mid 90's and are your standard Yamaha. Sorry i don't have a model number. Thanks to anyone who can help.