The HO Shay, original and new release

[WallyM]

I have a Bachmann HO 3 truck shay that is a disaster.  I have had a national company and a local train repair guy attempt to do the NWSL metal gear replacement and both failed.   First just had massive play, second was also not quite right.

So, seeing that Bachmann is releasing the HO Shay again with metal gears, will the trucks on the new release be compatible with my locomotive.   It is really my last resort before the trash can.

Any comments or advice most appreciated.  I really do like this locomotive and want it to run as it should.