Two initial questions...

1) When was your last bike fit?
2) Do you do any lower body strength training?

I'm 145 lbs. Bummed that the Beast shoes are so heavy, but I suppose it's the price I pay to avoid another injury.

6 months ago I virtually nixed my running volume due to a minor calf injury. During that time my cycling took over and was my focus. 2 months ago, I got the all-clear to return to running. All my runs have been easy with a gradual increase to just 20 mpw (half of my normal volume of 40 mpw). No tempo, no track. Despite this, my running has not come back. Not only are my legs consistently heavy and tired, my calves fire up during every run (in my past 15 years of running, my calves have NEVER hurt during slow runs or even tempo runs, only during hard track workouts). My questions are:

1) Would 4 months of a bike focus (trainer only) be enough to alter my running gait?
2) Why would my calves fire up during easy runs?

Important disclaimer: my podiatrist recommended Brooks Beast shoes + orthotics (had been running in Brooks Adrenaline) and felt that would resolve any calf issues but maybe that is the problem? Would it take 2+ months to get used to these new shoes?

Thanks for any advice!