Agree! They’re a mess.

I use X ray springs now.. 2.3, 2.4 marking make sense .. no need to remember on which generation of Tamiya springs yellow meant medium versus hard.

Tamiya should have stuck with red soft, yellow medium, white hard, blue extra hard of old..

I have no clue what rating mean on the left over kit springs from my 419, 419x or TB Evo 6. I’m always tempted to just throw them away and then I stop myself