I don't know which TT rest you have, but from what I've seen you do not want the Mantis rest. I've seen pics of the support arms on the Mantis broken. It's not durable enough. If the quiver is hitting the rest then there is usually a simple solution. Remove the mounting bracket and put a spacer behind it. A washer or two might be all that's needed.
Youcan do a search on here or read some of the other threads about the TRG/SOS system. There have been some issues with some pertaining to premature cable wear. Be aware of this and keep an eye on the cables. If you start seeing excessive cable wear then call customer service. Don't let your cables get torn up. From our understanding on here Martin has discontinued the TRG in it's present configuration and is supplying a regular cable rod/slide and STS as a replacement option.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver