I find it hard to believe some of your questions !
I posted pictures to try to help you with all of your questions,if you look again at the pictures that I posted on page 1 you will see on the centre picture the Big W pot, malt pipe as you call it,has 4 all thread bolts attached near to the top of the pot,these serve 2 purposes...a,to centralize the pot/malt pipe, b, as an aid to lift the pot.
What the picture does not show is 3 all thread bolts used as feet to hold the pot off the bottom of the outer pot.
I cannot see the use for splatter guards,look at the 12 inch false bottom which is domed,the centre hole of the false bottom is used for the purpose of holding it to the bottom of the malt pipe using an all thread bolt plus a large washer and nut to secure it. When you mention scorching the bottom of your Crown concealed element boiler, if the malt pipe is suspended by the 3 feet on the bottom,how is possible to have scorching ?
If you are prepared to pay the postage,I will give you my malt pipe as shown in the picture,I used this for 3 years and gave me great results, never had a stuck mash and created a recirculating system as good as you can get.
Before you go any further with your efforts, ask yourself what it is that are trying to achieve !
Splatter guards and bazooka screens are not necessary, remember that when mashing the speed of wort passing through your malt pipe is based on perculation not suction,many factors will affect perculation, not least of which is both the quantity of grain and the courseness or porosity of the grain bed,I can only see your efforts failing because you are trying to use splatter guards and bazooka's to filter the grain and not the grain bed itself.