I had an issue like that years ago where there was plenty of confusion at the mfg about what got shipped vs. what was in the marketing material. Bottom line was that you needed to know their catalog better than the sales guy in order to get the correct parts. The sales guy on the phone just sent the "normal" parts regardless of what you asked for. If you knew the secret code words then you were able to order the parts that had the pin oiling and the band in the correct location and all of that. I eventually switched my dyno engines over to the AMC lifters from Comp and they worked. Of course that isn't without problems since Comp doesn't actually have a part number for AMC lifters with Mopar tie bars. Once again, you have to know what works and then walk the sales guy thru the ordering process.