This just fascinates me, never before had I heard someone admit these things. Your honesty is humbling and I'm glad you had those experiences.
What biblical basis for tongues continuation do you have?
My guess is that you know them as well as I. I'll get to them but let me relate something of my experience that I have found to be somewhat rare. I received my first experience in 1976 alone in my apartment and it changed my life totally. I consider this when I received the gift of the Holy Ghost, precisely what I was begging God for, and spoke in tongues for the first and only time. This was one of several experiences over the coming years that have been a source of great joy. Since then I have learned much and have seen how this gift, if allowed, will work. Like I always say, there is a lot of unlearning we all must do and Satan is against us at every step. Fasting is one of Satan's worst enemies.