I haven't installed an HFT but have installed 2 SFTs in the past 14 months with no issues. First was Crower cam with Crower lifters and second was a CamCraft cam with Crower EDM lifters. I checked both cams for taper and unscientifically held several of the lifters face to face to confirm there was a slight radius. Both times i used Lucas break-in oil. Crower cam and lifters was coated with the provided lube, Lucas. CamCraft cam and lifters were coated with recommended cam saver lube. Broke in both with my 1.5 rockers (vs. 1.65). Started, instantly brought to 2000-2500 rpm and varied a little for 20-25 minutes. Did not remove inner valve springs. I may have just been lucky both times but no issues. That said, I wouldn't install one without checking taper these days.
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