Shower Drain repair question

Greetings to all:
I have an Aquaglass shower stall, and recently it leaked. The drain was accessible after cutting a liberal hole in the ceiling below. The nut on the back of the drain had backed off enough to start the leak. Shower is only about 4 years old, so I don't know if it really backed off, or was never tightened properly to begin with. It had only backed off a hair. My guess is it had very slowly leaked for months. Anyway, I put some new putty on the shower side and tighten the nut up from below. Not leaking at the moment.
The setup on the drain seems pretty common. Everything is PVC, the drain hooks to a ~12" straight piece, then goes into a trap from there. I do not like the fact that I have to bust out drywall to get to the drain to tighten it. So:
1: Would it be better, since I already have the drywall opened, to install a type of drain that tightens from the shower side? Similar to this one: http://www.oatey.com/apps/catalog/showskus.asp?ctg &subctg=4&prodgrpid7
2. If I do this, the only way that I see to do this is: a. Remove drain nut b. Cut the straight piece of PVC, remove drain and attached straight piece c. Cut new piece of straight pipe to fit. Place drain bottom on new piece of straight pipe, not glued yet. d. Glue straight pipe with coupler to the remaining straight piece still in the ceiling. Let set. e. Coat top of pipe with glue, slide drain bottom up the pipe, twist around to spread glue. Support until set. f. Screw top piece of drain in through the top.
Does replacing this drain make sense? or is it even possible without pulling the shower up?
Thanks,
John
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
JJ wrote:

That one may be a good choice.
If your shower base flexes (due to person's weight), I would add a rubber "Mission" coupling between the drain and the trap; the coupling will absorb some flex.
There is also the Oatey: http://www.oatey.com/apps/catalog/showskus.asp?ctg &subctg=4&prodgrpid8
This one doesn't screw in from above, but the seal to the pipe is accomplished with a special rubber sleeve which is accessed from above.
Jim
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I thought about the Mission coupling, but I don't think I am allowed to drywall over it because of code.
John

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.