With the bike on the center stand, with the rear tire clear of the ground, with the transmission in neutral and engine not running, slowly rotate the rear tire, can you shift to first and then upshift through the gears ??
If you can't you need to adjust the shift linkage back to where it was .
I've had two pair of riding boots, that I could not wear while riding the R65 .
Pretty much had a similar shifting issue, as you have .
Also adjusting the left foot peg my help, it's serrated, so you do have a bit of adjustment there as well .