Originally Posted by
trueno92
I recently had knee problems on my left leg, where my right is dominant.
The highlight above is another clue whereas simply focusing on "positioning" of bike touch points may mask in the short term but not solve the underlying problem.
Your body is very clever with compensating or offloading work to more efficient otherwise dominant skeletal/muscular areas when in stress (for that matter, your entire neurosystem).
Coming back for 10 mos after an 8 year hiatus can be quite a shock to your skeletal and muscular chain initially, going unnoticed by you, but if your body is weak in an area or even slightly imbalanced, there will be a cumulative cost that eventually calls out as particular aches and pains at a unilateral site, then often without correction, becomes a chronic issue.
For cyclists just returning and even for seasoned pros, periodic checking as well as incorporated weekly training of your
individual leg strength and nervous system firing through any number of drills found online (includes stress, plyometric, balance and stretching/yoga) goes a long way toward improved healthful performance on the bike.
I underscored "individual" above as with cycling the power-stroke is primarily a single leg activity. For example, while squats and deadlifts are tremendous whole body exercises, for cycling, mimic those as well as other exercises on a single leg.
Of course all of what I've written is a large assumption of your specific situation and maybe already completely obvious to you. But I thought worth mentioning.
I hope it is solved soon for you.