I bought the loaded CNC ported 190’s set last year during the Black Friday sale. Set up for roller cam. I’m a shitty shade tree fiddler at best, but first observation appears they pressed in the guides after the CNC process, which caused loose fragments of aluminum by the guide to easily break off if you ran them straight out the box. I haven’t mounted on an engine as I’m weighing option for either 408 or built short block to put them on. I would probably have them disassembled and looked over before I put them on anything for self insurance. See the fragment in photo not a big deal but still it’s the little fine details that matter.
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