I just made this script and posted it, but some variation of this will likely work for you. I was having the same issue with multipipe altering the tolerances of the tubes, so I made this to solve that issue.
I think you’ll have to drop your pipes with their pre-set diameters into the space currently occupied by the pipe command. You will also need to leave the path inputs as it uses those to determine the trim length for the joints/tenons.