AVB, I just sent 3x Troybilt 4 stroke trimmers to the scrap yard. stuffed bore - burning oil or spitting it out the breather - all under 5 years old
Yes those don't oil very well at all when use in any position than upright. I do same here with them as I send the customer on their un-merry way. TB only sells a short block to repair and bythe time I one hr of labor (and takes long than that to do swap out) it cost nearly as much as a new replacement trimmer/blower.
