Just had engine in for annual service. Dealer replaced electronic ignition and plugs. After the "tune-up" The engine stalls at low rpm and bogs down when accelerating. Runs okay at (a little rough) above idle. Compression check was 115 in both cyl. Took motor back they adjusted the carb. I replaced fuel and cleaned out tank. Same problem. Checked plugs both are dry. Any suggestions would be appreciated.
