Check out my mahogany nightstands and my tool cabinet...I built both of those projects since the last calibration. The tables could have moved recently though since I've been messing with it and moving it around...but you can get it back to very close...just takes some tinkering. Like I said...it's within the acceptable range unless you're a psycho OCD type. I could get a 2 thou feeler gauge under the straight edge on infeed table on the fence side...and there was simply NO getting any closer. Most people would laugh at 2 thou. I see no reason it shouldn't be dead nuts flat since it would only require proper engineering and manufacturing. Talk to your stepdad, get his opinion. Whatever is wrong with it is certainly repairable by someone who messes with machines. Keep in mind...I paid $400 for that Byrd head less than a year ago. It's basically brand new...haven't even turned the inserts yet. So worst case scenario...you buy a new Byrd head and get the jointer for a hundred bucks. And that's the last sales pitch I'm throwing because I don't wanna talk you into something you'll regret.
The Domino has three settings for width of the mortise to allow adjustments when fitting the joint. I frequently use the tight setting on one side and the slightly larger setting on the other side and never have had a problem. Marc in some of his videos, like the Roubo build shows how to quickly round off a tenon to fit a mortise cut by a router, if you want a tight fit.
New member here long time member of another forum, been into woodworking off and on most of my life I am mid 70s now so definitely on downhill slide. Here lately I have been enjoying building some construction equip and a couple old tractors , most but not all with Toys and Joys plans. \Took me a while to get registered probably something to do with lack of computer skills. Dee
When you say it isn't perfectly flat, how far out are we talking? Any more you can expand on the problem or bushings so I can research, I'd appreciate it. I'll have to talk with my handlers (Wife, stepdad) to see which is mostly likely to punch me in the face for mentioning this. I think it's unlikely but I will try my best. Cause I complain a ton about how I can't get stuff square. I got 4 laminated 7 foot boards right now and I absolutely cannot square them without a jointer or a table saw jig. And I hate to build jigs. I was actually going to ask a guy tonight if I can have him square them up for me, but he's touchy about his equip. Oh - and is this the G0490 jointer? With the 76+ inch bed?