The original had a 2 or 3 engine mount arrangement. Parts were included for your choice of one of those two. Additional parts had to be ordered to build the second mount. Since the three 18mm tubes are larger than the ID of the ST-16, they used a friction fit for the mounts using masking tape.

Providing all the parts to do three mounts (dual 18, triple 18, and single 24) would probably price the kit too high. It did for the SLS Brighton with the three included mounts. The costs for the mounts are:

3 18mm mount $7.00
2 18mm mount $5.10
1 24mm mount $3.55

Base cost of kit without mounts is about $23.00, so a single 24mm mount version would be $26.55 and one with all three mounts would be about $38.00. From past experience, we would sell less than a hundred if it cost $38.00.

The single 24mm base with optional 2 and 3 cluster mounts is looking better all the time!

__________________
Carl McLawhorn
NAR#4717 L2
semroc.com