Help!!!

So the dryer was working fine until one day the drum stopped working. So I went and picked up a belt from Lowes and all was good. Only problem is the belt on lasted 15 minutes before it broke again :mad:

So I ordered a Dryer Bearing Kit but of course it was the wrong parts (belt was slightly too long) but I went on and installed the felt and the grey and white plastic guides. Now I have to order another belt but everywhere I try to input the model number DPVH880EJMG, all the parts places have an extra 0 or 2 between the E and the J (so DPVH880E0JMG or DPVH880E2JMG) and so I'm not sure what belt to order. Also, I don't want to order another belt only to have it break again.

The ONLY thing I can find that seems weird, is that the two pulley arms seem to be very loose (not the normal L and R swinging) when it comes to movement forward and backward. I verified that the screw that attaches the two pulley arms, is all the way tight. So the question is, should the pulley arms have forward/backward pivot (in addition to the normal L and R pivot action in conjunction with the spring/belt tensions)?

No additional noises or signs/symptoms happened before or after this so I'm wondering if there's anything else I could be missing.

Thanks in advance!