Stuck between rock and hard place. I understand your frustration and we are in similar situation and have to ride it out due to different situation. Doesn't hurt checking on it and just letting him know you're just excited about using it asap. Just in case someone came in and ordered a bigger dollar amount one and is getting better treatment or said they were in a real rush for theirs and they didn't think it was a big deal to put yours off. Yes , parts are back ordered and things happen and stuff gets delayed, but good idea to keep in touch with them.
I'm sure it will be ready before to long and you'll enjoy it for many years to come.
