Low compression cb175 hard time figuring out why!!

Hi everyone, looking to get some help on 1971 cb175 with low compression. Made the following repairs: rebuilt carbs and set up to initial settings, replaced carb mounting gaskets, Checked valve clearance .002 on all cold, checked point gap ok. Performed compression check 85 p.s.i. on left and 40 on right. needless to say barely ran! Performed wet test, compression came up to about 110 p.s.i. on left and 80 p.s.i. on right. Pulled engine and disassembled top end. Found rings on right piston frozen to the piston, left piston and rings looked ok. Cylinder walls not bad on either. Cleaned up cylinders, ran a quick hone through. No ridges! Removed rings from both pistons. Had to clean the ring grooves a little bit on the right piston, but rings fit good. The ring set I received from Honda part number 13011-439-005 std. have the three piece oil ring and two different compression rings. One is wider than the other, not sure which position they should be in. Test fit rings on bores of cylinders to check end gap, less than .004mm which by the book is within spec. Installed rings and pistons and reassembled with all new gaskets. Re-installed the timing chain with the dot on the cam at 12 o'clock position with the crank at the T' mark pistons up. TDC compression! Re-installed head cover and torqued to spec following the correct sequence. Turned engine 4 revolutions and rechecked, valve timing ok! Re-checked compression, now have 75 p.s.i. both cylinders. Not Sure what's going on here. Disassembled engine and swapped the two compression rings to the other position. reassembled and tried again......No change in compression. rechecked valve timing and clearance still ok...Did notice some blow-by coming out of the head cover vent. performed a wet test again got compression to come up to about 140 p.s.i.. Tried a leak down test, valves seam to be holding fine when each cylinder is on TDC. I'm at a loss!!!!! Was going to disassemble again and check the piston groove clearance between the rings and the groove. Think I need over size rings but not sure. Anyone have any ideas. Frustrated!!!!!