Over the last few years we are using a technique called "longitudinal Momentum Mining" for extraction of pbars from the Recycler for Tevatron collider stores. During pbar mining, occasionally, the transverse emittances grow and life-time for the beam drops if both stochastic and e-cools are on. However, this problem did not show-up for the cases with new tune operating points (Alexey and Valeri). Here we investigate a method to improve the mining technique.