im having a weird no start issue with my s1 rb25det. i confirmed fuel, spark, new cas, battery is good. when i crank it over it cranks and after a few cranks when normally it would fire up, instead my dash lights go dim and theres this weird winding noise. i kept trying and thought i flooded my engine, so i pulled out the plugs, some fuel but not flooded. i blew air into the cyl and cleaned off the plugs just in case. same thing happens. it was literally just starting before, all i did was adjust the CAS on the last fire up to correct the timing. its almost like the battery is bad, but its not holds 12v even after attempting to crank a half dozen times. im pretty stumped... the winding noise is something i never heard or seen before. opinions would be greatly appriciated!