Mike I'd run it and if you don't like it then yank it and have it tweaked. Thousands of those were sold and I'd say the vast majority love them. Just extreme instances and a number of bad ones will be what you read about online like anything else. Heck by the time you decide it isn't up to snuff they might have proved that the RS600 really is the best thing since sliced bread
. I think the TKO600 resale has/is tanking at the moment due to the trade-in program and so many wanting to move to RS due to the hype.
The T56 requires extensive tunnel mods from what I could find out.