at 200 miles I had the Yamaha dealer mount a Pirelli mt43 on my new tw. since then I've had a small wobble but have done nothing because I heard it needs mileage to seat it self. today at 600 miles I put the bike on a center stand and spun the tire and it doesn't spin true. I let the air out and reset the bead about 6 times and I can't get the bead to set evenly all the way around. is there some secret method to doing this. I ran the pressure up to 45 lbs, the bead popped at 30 lbs but never set evenly any suggestions? I've read only good things about this tire, is it possibly a bad one?