Ive had a Echo PE-200 for about 2 years, It has been running bad It idles ok but if you open the throttle it breaks up. I replaced the plug, Air cleaner,and fuel filter and removed spark arrestor. and It still ran bad I brought it to my echo dealer to have it repaired and he said he changed fuel filter and gave it a cleaning and charged me $20. Edger ran O.K for about half a day then ran just like before. I have been so busy I have not brought it back to the dealer and enough time has pased that hell say its a different problem. any tips? Ive had echo trimmers do this as well so It could save me some cash if I knew the fix.