So I've been seeing more rotary shops selling there own Apex Seals . you see pics of them and they look just like the RA apex seals.. then they, in one way or another state that that are XXXX stronger... diff names we all kinda know who really makes them but my ? is since people tend to agree that the springs are weak... do these companies sell them with the weak ones or do they use mazda factory springs... and yes if I'm assuming to much on maker, so be it.... just curious....