best to stick with one set of plans for the build. paper plans are not guaranteed 100% accurate. my 40 i built....the right half of the wing did NOT line up with the left half...in other words....you couldnt lay the 2 views together....and hold them up to the light and expect them to line up. its erors in paper shrinkage, and the printer. and my reason no fuse jig is its not needed if you build over the plans. if your plans are not large enough to build over a jig wont help you...you still at your judgement. most plans do not line up left to right.....least i havent found a set yet that does. take laser cut parts for example....lay them on the plans.....they are not correct. i find it best to just center them up best i can over the plan. its wood your working with anyway.....you always add or remove. hope this answers some of your ?????