Rain Barrel 4X6 Overflow

I needed to upgrade my rain-barrel overflow to handle the mega rain events we are having so this barrel fitting is for a 3X4 inch downspout. This is 3 or so times larger than my old one. I used a saws-all to cut the plastic barrel and used stainless hardware to bolt it on. I did add a bead of gutter sealant just for overkill. The fitting fits tight on the elbow and I did flatten the ridges in the aluminum elbow to help it fit better. It fits tight however, I'll put a band around the aluminum elbow if I need to secure it. UPDATE 7/6/22: this overflow has handled two heavy downpours without overflowing. Success!