Exactly - That's what in my opinion that I believed - have to see how's it's been done & tune. I had tried using those Tuning Guage before also - no uise lah. Then I pay people to come and tune my kit's - and I saw how they do it...differently of course...but I learn alot from them while they tune - I asked....
For instance - Helmi from Swee Lee tune my snare using a Piano (using what Notes) I do not know - He press a key on a Paino then tune my Snare...You asked me - If the snare sound good after that - I dunno cause I dunno the way he tune is proven or not...but I dont like the sound
Tony Zee Tune my Pearl MLX (which are using Remo PinStripe)...Test this kit to my Yamaha Stage Custom (using Evans G1 - which I tune myself) and compare the difference - My Yamaha Rocks man - Killer Sound - even Bro Zen said so - whenever he comes my home - He loves to wack my Yammies - Solid Sounding Drums man....the difference Single Ply skin & Double ply skin here so both the Batter & Reso are tune very differently too due to that - People says tune the top skin looser, bottom tighter and I think it dont works that way - depending on the skin you use.
My Opinion which I strongly believed is this: -
(1) Bearing Edge of Shells must be Perfect (or else the rest no use - cannot be tune & sound good)
(2) The Type of Skin we used very important (Single ply always better tonal quality & easy to tune).
(3) Actual Tuning has to do also with how big is the Kit - eg Standard Tom-1, Tom-2 & a Floor-Tom only - or....4 toms altogether, or 5 toms altogether etc.....because - It has to be tune altogether to get the tone right - so it's melodic - also people says - If one of the Batter is spoiled - I dont just change the damaged one - I have to change the entire set - and I did it.
(4) The 14" Tom is most difficult tom for me to tune as always
But the above is what I went through when I change my skins & it had to be tuned.
PS: - The most funny is The Yamaha Guy came and tune my Kit put Masking-Tape - I told him off - Do you know how to tune or not actually - none of my kits use Masking Tape - Rings yes of course. If someone come and tune my Kit - use Masking Tape better I do it myself who dunno how? correct