Just to clarify, Im not jumping to do this especially without any professional advice… although it does tickle my curiosity. My initial thoughts are surely it’s not quite that simple as the my amp was made to run at 100w. Ive seen people say yeah pull the two outter or two inner valves and then setting the impedance switch to 8 instead of 16. I also know that the difference between a 100w and 50w is only about 3db.
Would love the gods of Fryette to voice their opinion on this whole thing. 
I’m not going to comment on the tube pulling, but I’m tired of people saying “hAlF poWeR is OnLy -3 dB” as if -3 dB is not a lot. -3 dB is, in fact, half of the power
take a good mix in your daw, lower the guitar tracks by 3 dB, and tell me that 3 dB is not a lot…
Yes it’s noticeable, but it’s not literally half the volume which is what can be mistaken. That’s all I was getting at 
OK, you asked for it!
There are four things at work here:
Pulling two power tubes does reduce power output because there are fewer “pistons” pushing the load.
This also creates an impedance mismatch. For example, four EL34s typically operate at 1750 ohms plate to plate. Two EL34s operate at roughly 3500 ohms plate to plate. That mismatch affects how much power the tubes deliver to the load and how perceived volume has changed. So, this is the first reason to reject the “3dB” reduction argument. That doesn’t happen.
A 100W output transformer, besides being wound to match 4 power tubes, also has sufficient mass to support a low frequency response at rated power and therefore will saturate less easily at full power under 50% of maximum load. In short, the perceived volume will be louder than that produced by a 50W OT with a 3500 ohm primary.
Because of the roughly 50% reduction of current draw on the power supply, the plate voltage on the remaining pair will be higher. The result will be a greater headroom and output power potential than an actual 50W power amp could produce.
Before someone jumps in and says “But you can correct the mismatch by changing the impedance!”, keep in mind that this only changes one of the four conditions described above and is not a perfect correction because that depends on the character of the actual load which varies with frequency.
In other words, you can calculate for any static condition you like, but you can’t ignore the reality of dynamic behavior - meaning the real world playing experience. Math is great for designing a circuit. It sucks when trying to account for what happens on stage when other loud musicians, cute girls and stiff drinks are introduced into the equation.
Awesome thanks for replying David!
Its gonna take a few read throughs to absorb this properly (kinda slow at processing written stuff lol) But I thiiiiink I get the gist… 
As an overall though would this have a negative effect on the amp? What I’m taking from that currently is the impedance mismatch is the main issue and can mess things up.
Not really, thought I don’t particularly care for the sonic result.
Using a power Station to achieve that goal is an orders of magnitude better solution sonically.
Dave
I never liked the sound of pulled tubes.