You mean to tell me that you are driving your Cobra in April? Global warming and break up occured in Fairbanks before June???
(My folks and a couple of my sisters live in Anchorage. I lived there back in the late 60's / early 70's ... beautiful place!)
Ok... back to Cobras...
I've got the same thing going on with my CR. I've got a vacuum canister, good vacuum, booster seems to be working, but the brakes are nothing like the brakes on my Mini Cooper.
Like you, my Cobra has a nice pedal feel, not spongy. Stopping the car just requires all sorts of effort -- heck it is nearly impossible to lock up the tires unless I really but the boot into it!
On another thread I asked about 11" brake systems thinking that an 11" brake might give me better stopping power.
Ideas Don?