Revamp Fistule spawn conditions

I have a suggestion for the spawn conditions on Fistule. Having 1 NM available every 20 minutes or so is a big issue on Cerberus. There are so many people camping him that you can't get a weapon built. I have been trying for almost two months to get Fistule Discharges for Gandiva when I have the Buhkis Wings for the next trial. Every trip out to the zone there are at least two parties camping Fistule by holding Gumauve and Bloodguzzler. My suggestion is to revamp him like the other NMs. All the other weapon Nms are force spawn with three sets of ??? giving multiple groups opportunity to make progress. With the current conditions for Fistule one person or group monopolizes the NM by simply killing it, popping Bloodguzzler & holding him for the 20 minutes for Fistule to respawn. I have even seen groups holding Bloodguzzler and kill Gumauve so that no one else can claim Fistule. Something needs to be done to balance it out.