Powerless?

Went to K by myself today. Took some time warming up, but maybe a little to soft? Then worked on some black problems. Did 5 black problems, some flash, in total and was close to 1 more while working 2 more that felt hard. Noticed that the 1st hour all feels ok but then fingers start to get a bit more sore as well as my core tension lets go. Furthermore the Mad Rock shoes seem to work fine on more vertical things but as soon as it gets more overhanging and technical they feel like 'clogs'.. very stiff and no feeling..might have to sand down some rubber on them...Some nice problems there.