Medium Thickness in Flasks / Good Flasking Practices

[Patrick_C]

Hello!
I bought two Phalaenopsis orchids a few years ago when I was living in Florida, and have managed to keep them alive since with new blooms about once a year every spring. I recently tried my hand with propagation and successfully pollinated one orchid from the pollen of the other. I currently have several flasks in a windowsill with some protocorm growing on the side walls, but I think that is where my success is going to end.
I notice the mixtures in my flasks are too liquid-y, I have been told it should be the consistency of pudding, but I am unsure how to achieve that consistency.
My flasks consist of P668 media, distilled water, coconut water, and guar gum for gelling. I notice even with ice cold water and my kitchenaid mixer with the wisk attachment on the highest setting, I can only get so much guar gum into the mixture before it starts to clump up, even with the guar gum and P668 mixed together to keep the gum from gelling prematurely.
Do you all have any suggestions on how to achieve the proper consistency with the mixture in my flasks? Is there a better gelling agent to use? I also notice that the mixture appears gelatinous before it goes into the flasks and into the pressure cooker, but after it has been sanitized, the consistency falls apart.
Thank you all very much for your help! I apologize for the length of my post.