So I have a skywatcher classic 150P. It's supposed to be compatible with two inch lenses. My parents purchased a celestron two inch eye piece kit for Christmas for me. They didn't fit by about 6mm so I had a part printed to make up for it. Last night I tested the lens and the 3d printed adapter piece and it was all out of focus and there was some sort of lighting issue as well very glaring when I looked at Jupiter and wouldn't focus. As well as the moon wouldn't focus at all

The lenses are 40mm 32mm and 26mm e lux lenses

The lenses measure at 51mm the inside of the telescope @ 57mm The dimensions of the adapter 41mm tall 51mm - 57mm 6mm thick wall approximately due to printing limitations The lip 70mm diameter at outside

What can I do to fix the issue do I need to redesign the adapter piece? Is there a official part I can buy? Did my family spend 300 something bucks for nothing?