I've decided on a 20" bar for my Husqvarna 55. I'm wanting a factory original, professional grade, Husky bar. No aftermarket or consumer grade stuff. It should be: .325 pitch, 78 drive link (from what I understand), and either .050 or .058 gauge. 1) Do you recommend .050 or .058 gauge? 2) Would you consider a solid nose 20" bar on this saw? 3) What are the part numbers for Husqvarna's pro-grade 20" bars shown below? *Solid nose part # *Sprocket tip part# *Replaceable sprocket tip part # 4) The bars that say "Farm Tough"... are those all consumer grade bars? I went to Husqvarna's site, but many of the bars have no picture associated with the part number. Furthermore, their saw look-up feature only covers current models. Then Husqvarna does not clarify what 1.3 Pixel means, does not show their solid nose bars, and does not explain the differences between X-Force bars verses other types. Calling the 800 number for advice was useless because I sat on hold for 35 minutes. Any advice is greatly appreciated. .