I have never weighed the wax after mixing the 115 and 125. I have a small scale. Have you tested for burning yet. I really like this mix 50% 115 and 50% 125 with about 2% beeswax. I did a test with just 115, just 125 and the 115/125 mix and preferred the mix. The 115 alone seemed too viscous, and the 125 seemed to burn too fast for my liking. The mix really burns nice and slow with the beeswax added. I'm not sure what is changing with the weight for you, but this mixture is what I prefer in my candles. HTH