Had a climber who would brought his echo and we put it o the test. 2 trees about the same size he used his echo. Then We let him use our Stihl 200t. Next day he had a 200t. he literally said " Tommy, I was fooling myself with that echo."
It is very important for you to post your results once the problem is solved so that people will be able to reference a solution to their problem down the road. YEARS may go by and someone has the same problem PLEASE POST YOUR "IT WAS FIXED WITH x SOLUTION.