Absolutely -
single gassers require accurately balanced props for performance to be maximized .
If one can't note any difference in power/vibration with balanced /unbalanced props -----there is something else adding to the problem.
The dynamic unbalance of any good singler cyl gasser I have tested on my flexing board test stand, peaks between 2700 and 3100 rpm .
If you still have a "whole lot of shakin goin on "- your airframe/engine/prop setup has other problems.
the Volvo wagon has a HO Mustang v8-that is real fun --