I'm in CO too and get dropped by "climber" types on sustained climbs of over 5%. My smallest gear is a 34/25, yours is a 30/26. The better climbers (that drop me) usually have larger gears.
I also weigh ~187lbs and they're usually ~140-155lbs and spend about 50% more time in the saddle than me. For me to be a better climber, it's a matter of losing weight and doing a lot more climbing. I won't say that you're in the same exact boat as me, but I don't think your gearing is hurting your climbing.
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