I think the Tiapans 5.7 were lighter than 130kg.
Taipan 5.7 was advertised at 135 kg and texel measured it at 136 kg. One of the few boats that were actually near their proclaimed weights when checked by Texel measurers.
... A few of the builders felt that the HT min weight (Marstrom for one) was too high. ...
This is actually quite funny as Marstrom is producing its M20 at ... 127 kg ! (Texel measurement). Marstrom started at 108 kg but over the years the M20 has gotten heavier and heavier. Still I fully believe a 120 kg F18HT is possible. Especially since these boats have no jib and this allows the bow sections to be constructed lighter.
... All it needs is a small group of volunteers to run the class and make the schedule. ...
That is no small condition to be met
Wouter