I purchased a 89902 vanderbilt tender this week to replace an existing tender that was still working (both forward and reverse). I just wanted a vanderbilt to replicate a local engine. So I guess my problem is this new tender once plugged into my 2-8-0 consolidation engine will only run forward and not reverse. But if I use the old tender it still works forward and reverse. Anyone know of this problem and/or have any solutions? Thank you!