hi, can anyone give me advice on the jetting of a 2000 txt 321,at the moment the main is a 120-pilot is a 30-needle is in the second top groove and air screw is 4 turns out. the bike at very low revs seems a bit rich but is fine at all other times,are they like this?or will i change to a smaller main/bigger pilot? many thanks

From the GasGas USA tech Tips:

http://www.gasgas.com/Pages/Technical/Snel...ting-specs.html

1998 TX270/1999 TXT270,TXT321/2000 TXT280,TXT321/2001 TXT280,TXT321/2002 TXT280 EDITION 02: WITH PHBL26 (26mm) SEA LEVEL TO 3,000 FEET

MAIN: 114

PILOT: 36 (38 OK)

NEEDLE: D36 (2nd CLIP POSITION DOWN FROM TOP)

FUEL SCREW: 3.5 TURNS OUT

FLOAT HEIGHT: ARMS IN LEVEL PLANE WITH FLOAT BOWL BASE (PARALLEL).

thanks,will give it a try