NiteLiter

I have been using a $150.00 Anet A8 for the last 2 years,its a lot of fun making stuff for the house and for kids,I hav no problem making things that stand ALONE such as insects,statues and such,but when I try to make something that gets put together such as belt tensioners,they DONT fit together, I have done all I think I can do with the belts,tighten them up,made a few "S" shaped belt tighteners,tightened and lubed the frame,bars and rods,for one the "H" assembly under the heatbed was upside down,even tho I put it together as the video said,but when I found a few pages on making this cheap printer better,they showed that the video that came with the instructions was wrong,so even after fixing that here is what I come up with from a 10mm cube:averaged out Z-Axis =9.96 X-Axis=10.13 Y-Axis =10.10 now on a 30mm cube: Z-axis=19.97 X-axis=20.14 Y-Axis=20:16 99% of the time Print Temp is 190F,and bed temp is 60F.Im at a lostt,but maybe Im expecting far to much from a cheap toy maker. Thanks Joe Merritt Chesapeake.,Va K1DOA