Is there any difference between the Evans Hydraulics and Remo Pinstipes? They both say 2 ply, 7 mils, and oil filled.
I've used Pinstripes off and on for years. I've found that it may not always be the best sound for toms, but I can at least always get a good, usable sound.
Back in the day I would take a used Pinstripe and strip the top layer off . Then cut around an inch from the rim then again at the hoop and then place that under the snare head . Sorta like the Power Strokes have now . Never did I feel any type of oil film on the heads after I cut them .
The Evens tho did have a slight bit of oil ...as if someone took an oily rag and wiped the inside of the heads with it .
I have noticed that some clear twin ply heads appear to have oil between the plies but in reality they don't. When I fitted new Evans G2 batters last summer the multi-coloured 'oil on water' effect was easy to see when I took them out of the packaging - as I progressively tightened the 'oil' seemed to recede from the centre of the heads until there was a faint ring close to the bearing edges. I think its just a trick of the light as G2s don't have oil between the plies. Maybe mylar is made from oil by-products and the light shining through causes this effect?
I believe Evans used a drop or two of hydraulic oil between the plies, hence the name. The theory at the time was that the oil was an absorber of energy, giving the heads that classic "deadened" sound.
all the best...