Well, The Boiler Room is indeed a fantastic tool (first time i've used it) along with usual tools:Monst2+ and EZ Rider.  I know the Stormtrooper code quite intimately now, especially around $7818, $7a00 where the sector loader is.
One problem I have found is that I now can't get Monst to run from the boot sector like I used to.  Steem just bombs out and resets.  Any ideas why?