If you're not having a lot of luck from the factory, your next best bet might be either of the farang partners
1. Harry Essen, who founded & owned Technoflex.
Mr. Harry Essen, well known as the father of Low Speed / High Speed Gas Shocks and the former owner of Technoflex in Holland has joined YSS. Harry sold out 6 years ago & now concentrates only on off-road shocks.
Contact Harri via
YSS Europe http://www.yss-europe.eu/
2. Walter Preisig
Walter Preisig (Y.S.S. AUSTRALIA) has been developing racing suspension in Australia for over 25 years, gaining a wealth of experience.
Walter runs YSS in Australia, is also another shock absorber specialist.
Contact Walter via
YSS Australia http://yss-australia.com/index.php