I know welding all about angles, im told as long as im 45 degrees between the joint i cant go far wrong... i just dont have that sweet spot yet where i can just put the welder to the parent metal and go... i always have to adjust etc before i produce a decent enough weld... and im welding lorry chassis so theres alot of awkward joints to get at? any tips or anything on how to get the desired angle and how to get to them awkward places without being too much on the bottom or top?