"this makes the 2X4 extend (2') past the end of the gussets (4') and them tapers down to meet the opposing rafters. I am trying to figure out if that part will be ok or will I get a hard time about it." --- You can't just nail the 2x4 on the other side of the plywood from the rafter? Isn't the plywood acting as a ridge tie to hold the rafters together at the peak? The collar tie was installed to reduce the span
of the rafters from bearing to bearing, making them stronger. Sounds like you are going the correct course, here is some reading for you on collar ties, purlins and struts. Page 257: http://books.google.com/books?id=1fI...20ties&f=false
With tapering to a point, they may call you on this as it may not transfer the loads down correctly. Here's the same idea, on beams and joists, page 38-40: http://books.google.com/books?id=iwS...joists&f=false
An alternate way to attach shed dormer rafter ties/ceiling joists, page 43-47, Fig. 31-B: same book.
Be safe, Gary
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!