What you did is perfectly fine as each and every razor has it's own personality. What you did isn't really a "double bevel", it's just honing a wedge. I agree with Glen (surprise here huh?) on three layers being max. I've been known to utilize a coarser stone for edge corrections like you wrote about, which is why I have my shapton's down to 220 grit. I have found that I don't use it hardly at all simply because the DMT works wonders with correcting a bevel. You tried one way & it didn't work, so you tried another...good to you sir!