Going in the right direction?

Hello everybody!

I've been an helix user for about six months and I think I'm getting close to something but don't know how to get through a little problem I'm having, hope you can help me.
I have no problem getting the anal twitches, after a while they become stronger so that the abutment tab has more pressure to my perineum and I start to feel a "little something" in the anal-perineum area, my heart beats faster, and feel that something is about to happen, but as the tab pressure increases the twitching decreases until it stops. I have tried to make stronger and softer anal and PC contractions, but cannot get through that point for several weeks now.

Any advice?

Thanks for your help!