I recently removed a PS 2 unit from a steam locomotive that had serious mechanical problems. I transplanted that unit into a Bershire that used to have only a whistle. The donar was a NFW J class engine from an MTH starter set that I picked up for 60.00 knowing that I was going to remove the unit. The installation into the Berkshire went perfect and I mounted the tacometer correctly. My question is will the locomotive run eratic if the wrong file set is on the locomotive? I left the J class file on the unit and the chuffing is static like but the whistle is crystal clear. I have downloaded the correct files for a Bershire but will this help. I had no problem converting the smoke unit over and it now puffs. Any advice would be great.
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