I’d imagine i will have the same problem. Had similar problem with an outdoor shed frame I built for a water softner and pressure treated lumber. That sounds like a solid idea and will likely incorporate it into my frame build. Just ordered my kit, so got plenty of time to work on my frame.
How long has it been since the “T” addition to your frame?
I will be going the unistrut route. I don’t have an indoor workshop. The poor Maslow has to be tarped (I also use garbage bags for extra protection over the motors). It won’t fit inside the covered patio that the table and miter saws are in.