Now that LB has sold the 21" commercial hand mower with only the B&S engine option, can anybody share their one-season (or more) experiences? I have ran LB 21" commercial mowers, with 2 cycle engines for several years. The mower gets heavy use over the season, used primarily with side bagger. I have a "F" model, related to spot duty for the past four seasons. And, I have a Dura-Force 2 cycle model that has seen many, many service hours. The Dura-Force engine has been an enigma for me, running so well for most of the time, but has its quirks (e.g. warm starts) at times. The time has come for some decisions: (1) Do significant rebuild on the mower, or (2) Replace it with something else, having two mowers for spot duty. I am well committed to the LB line, so don't bother to convince me to go elsewhere. I love the quality of cut, the side bagger works so well in this area, and the mower weight is the most managable. However, if I were to replace with another LB 21" commercial mower (with the offset wheel design -- no worry, I didn't like it until I used it for awhile, now don't want to do without), I only have the B&S engine. I have read of at least one person with one, and the reviews part way through the season were favorable. Now, the the season is over for most of us, maybe there are those who used their LB with B&S extensively for the entire season. I know the rest of the mower undoubtedly has the same flaws as earlier 2 cycle models (e.g. ground drive cable life, rear drive wheel longevity). My question pertains to the B&S engine. I am interested in such things as reliability, power, starting ease, hours of running per tank of fuel, air filter management, (no oil filter as I recall), difficulty in maintenance (e.g. carb adjustments, oil changes, etc). Thanks.