not much diffrence in length between irons

[bh5339]

I have continually been frustrated by the fact that my mid irons (5-7) are are all going about the same distance and I'm not getting the distance that I should with a "good, clean shot". My 7i is only going ~ 100-120yds and the 5i around 130-140. The shots are straight and run a bit high, but I'm not taking a divot and again have little to no distance control. My swing speed has been checked at ~70mph with a 5i by the local pro shop and I play Cleveland TA5 irons w/ regular flex shafts.

Any ideas?