Signal Problem on Lenovo s920 Kitkat

I never expected Lenovo to provide an OTA update for s920. Well anyways it came. But to apply the update i had to revert to stock recovery from twrp and unroot. Once done, updated and in 10 mins the update was completed and my Lenovo s920 was on KitKat 4.4.2. Great !!!!!

Yeah, i did read the reviews and comments about the slower camera, poor signal reception, but i still wanted to have the latest android on my phone. Yup, the camera was slower, but i did not find any decrease in image quality. And i had installed the Lenovo Super Camera apk on 4.2.2 itself. The additional camera features is a bonus.

Then came the signal problem, right from Day 1. I had 2 sims, and everyday at office from 10.30am to 12.00pm i just wouldn't get the signal. I couldn't make calls and also wouldn't receive any. In the evening, it worked fine. But at that critical moment when u really want to make that call...Damn.. the signal disappears....it was annoying but then the search started.....yes.. the search for a fix....Found some options to revert to 4.2.2, install MTK Droid tools and change some settings, install CWM, root the phone and then replace modem files.
AND... i didnt want to revert to 4.2, changing the settings didn't work and i was unable to install CWM using SP Flash tools as it always failed with error 8083. Yes, i tried to find a solution for that too, but ended up with a blank and stopped.

During the signal drops, I noticed that even though sim 1 has a singal, if sim 2 shows no signal, then i was unable to make the call. So, I removed my second sim, and am using my phone with only 1 sim and it is working perfectly. Now no signal reception problems at office at the same location.Yeah...

anyways hope Lenovo releases an update for fixing this problem....