Phlip:

Not sure the link reference to Flightlines that Badger 5964 is what you want. That reference is for the EZ (air bleed) carbs AND .40 and larger engines. Your .25 has a variant of the MK-X carb.

Try this after the RTV attempt.

The MK-X carbs have coarse threads on the needles and sometimes they tend to be a small source of an air leak. Pull both the high and low end needles Screw then IN first to LIGHTLY touch the bottom and count the turns. Wrap each needle with ONE layer of "Plumbers Tape" (TEFLON). Reinsert the needles and screw then all the way in to LIGHTLY touch the bottem then turn them back out the exact number of turns from before.

NOTE: You want the tape to SLIGHTLY extend past the treads at the needle end as this will help keep the tape from balling up when you reinsert the needles.

Good Luck.

Dan