what they didnt show on the vid and noone has mentioned in the posts above was the effect it had on the accuracy of the rifle???
All I did to the TX200 is what was in the photos.... no vmach kits, tuning kits etc, all original parts used, just a good clean and polish of the internals and the piston washer made to a tolerance fit in the carrier.....
Hopefully the 97K I'm busy doing will turn out the same....
Full pics so far here....
http://s39.photobucket.com/albums/e165/Marksm4n/Project%2097K/
Darryl