pinning on sunday and friday isnt really the best way. what you should aim for is a low fluctuation in your serum levels. look at it this way, when you pin on sunday, you get a big spike, then it goes down all the way til friday, then you pin again and get another spike, but only 2 days later you pin again and it spikes again. ideally you should probably pin it on say, sunday/ thursday or monday / friday. either way, im still confused why you said 250mg a week when you will actually be pinning 500mg a week of test.