Piston pin bad ?

stock heads , Lunati Voodoo 268 duration , Hughes springs to match , definitely inside engine..I can feel it with my hand on the carb.

I will pull the intake tonight to see if I dropped a 1" nut in there..lol ..or something big !
then will borescope the chambers to check for damage and/or misc objects floating around.

I can't say I have much experience with rod or crank issues (thank god..) so I am not exactly sure what each sounds like. But I dont imagine they sound like that.