I've Got a Problem

Well I've ignored my blog for almost 3 weeks ... sorry guys.  I just got lazy for a while.

I've been following Allan's Challenge - and things are going great so far.

I've been losing, haven't been cheating.  Things are going well.

Up until a couple days ago.  On Sunday I weighed in at 236.6lbs, down 1lb from the previous weigh in. 

Now here's the problem, the next day I went out and bought a new scale, as the one I had wasn't that great.  I used the new scale the next morning, and it added 8 lbs to my weight!  I thought maybe it was just an irregularity, so I checked again the next day, and the next, I'm now down 1 lb from the original 8 lb "gain".  I'm thinking maybe my original scale had my weight wrong this whole time ... but now I'm not sure what weight to use.  Should I just use the number on the new scale?  Or should I subtract 8 lbs from the new scale weight?

I try not to weigh myself other places, like the gym, because it's not first thing in the morning, and the little gain from the water and food usually bums me out so I avoid it.

Any advice would be appreciated :)

*EDIT: I just wanted to be clear that this is not a BS post where I actually went mental and ate 8 lbs worth of calories, I've been sticking to my 1200 cal and drinking all the water.