After some years of work I have somewhere in first stage of creating a new gravity theory which would extend General relativity theory. There are many similar attempts from serious physicists and even many more from crackpots. I have no academic association and have only MSc in Computer sciences, doing physics as my hobby. Some years ago, I have estimated my chances to actually invent some new revolutionary theory as 1 to 1000 000, but after gradual improvements Im now in stage where my theory can make predictions which are new and can be confirmed by astronomical evidence, calculations based on GPS satellites data and now Im working on lab experiment, which could be easily repeated by any other lab. So after first aproximate calculations which confirmed predictions Im quite confident that Im on right track. But I have some serious issues. Im nearing to a stage, where I need to contact some physicists which have published related papers to obtain exact data for calculating theory predictions and also to gain potential endorsers on arxiv or potential co-authors. To motivate them to cooperate I would have to explain predictions and details of my theory and then maybe some of them would cooperate. But if I send my work for example to ten selected physicists, it can easily end in nine of them rejecting it and the tenth, which would really get to understand it, could improve it within one month and publish it under his name. How to avoid this scenario? Should I publish this theory in basic version without experimental confirmations first in vixra to have it time stamped with my name and then proceed trying to get some cooperation with physicists to polish it to be published in arxiv?