I have a USPS Genesis PS2 that had a low battery. The engine was running fine - sounds bell, engine sounds were all working with the low battery. I replaced the battery with a BCR1 and it hasn't run well since. I have lost the sound, bell and the engine is now locked in one direction. I have tried unlocking direction with no luck. I tried putting a fully charged battery back in but that did not work as well. I run conventional witha Z4K as transformer power. Any ideas?
Thanks in advance for your assistance,
Frank