Decided to replace the belts on my 69 bird with 72 pontiac 400. I was able to get the old belts off, the two new ones are roughly 1/2 to 3/4 inch smaller which I figured was likely due to wear and stretching of the old belts. I got the alternator belt on but it is twisted in one area and the p/s belt I am struggling to get on all three pulleys. Any tips, tricks, suggestions on how to sort these issues out would be greatly appreciated