So i retapped the tube hole on my twbest classic sub, and that went off without a hitch, the new tube screwed in nice and smooth, no problems at all.
the problem is that the new tube is not sitting flush to the case, therefor when the crown is screwed down all the way, there is space btw the crown and the case.
also because of this, i am having trouble screwing the crown back in without it changing the date, its not hitting that final stage to screw in, just the time change and the date change.
i assume i have to remove a little material from the case itself in order for the crown to sit flush against it, but i dont know how to do this.
any help?