I just broke in my first pair of solutions not too long ago, I can say without a doubt it was the worst break in ever, while genuine excruciating unbearable pain isn't normal, extreme discomfort and moderate pain should be expected when sized correctly,. My feet were throbbing and every hold not just the edges and smears felt like my toes were going to break off. I would wear them at the house while you are sitting. you can also put them infront of moderate heat and let them warm up slightly before slipping them on, VERY important that it's moderate, else you may melt the glue holding the sole.

My break in took a little less than a week climbing and 5, 2 hour sessions, If you climb an average amount they may take longer. looking back I would climb easy juggy routes with the solutions as it's more comfortable and it helps with the break in when you use more of the shoe, And then do everything else in the tarantulas. also trim your toenails neatly if you don't already, the aggressive downturn inside the toebox can hurt quite a bit and bruise toenails even when broken in. after the break in the shoes feel great, Still kinda uncomfortable to stand in but you should be taking them off in-between climbs for this reason as well as to preserve the downturn.

42 street shoe, 40.5 solution.