I don't know what bow you have, but I bet you could go a lot heavier on your tip and get better flight without cutting anything, that's a pretty short arrow for 150gr up front and a 54#@26". All depends on bow and how deep your riser is cut, I'd try that long before weight tubes. And if you just have to add weight to your arrow, realize it will lower your FOC, look through the traditional archery anf wilderness podcast videos, they are sponsor on here, you can find them on the sponsor list, he shows a sweet way to add weight via rope in the shaft, he mentions how it lowers FOC in the video. Try heavier heads first though!