Currently I own a Homelite ST-275 trimmer that has received a good amount of hours each week for the last 6 years I'd say, even before I used it for commercial use too. Anyway, my question is, when I start my trimmer daily, it doesn't go to full throttle right away. Is it just that it needs to warm up or is the shaft going bad? If you hit the gas right away, it usually looses power and shuts off. It always used to get going right away the last couple years but this year it has been acting up. I plan on buyng some new trimmers in the spring but I would like to keep this trimmer as a backup just in case. What do you think could be up?