Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: I saw where one reviewer said that the sir attachment for a drill does not fit into the carboy. Is this 'operator error' or kit assembly error?
Document: very affordable and it includes everything you need except for the ingredients, very pleased with the purchase. The only thing that prevented me from giving it a fifth star is the fact that the mixer you attach to your drill does not fit into the glass carboy so you  have to mix it manually with the plastic spoon. However, the spoon mixes surprisingly well even when you use the &#34;handle end&#34; for mixing.
This kit had everything to start on a rather expensive habit. I use the primary to ferment wine and beer now. I've made about 10 bathes in the past ear and it still operates wonderfully. The gallon measurements on the side are really helpful in making exact formulas.The only thing I did replace so far is the corker. I bought a floor standing model. The other one was too imprecise and wobbly to bottle 30+.Spend the extra on a proper corker and you'll have a perfect hobby.
Got this for my Husband for Christmas and he loves it!Everything is in this kit!The only thing that we will buy will be a better bottle corker although there IS one included in this kit.
My husband loved the kits and although a little costly, you get everything you need and then some. It is a great deal if you don't knwo all you need and you don't want to search for all over for what you think you might need. FYI the carboy is glass and it is heavy REALLY heavy!! !I recomend this.....
This kit has it all. My wife loves it, I plan on buying more as gifts for friends and family
This kit has everything you need plus some extra items to assist your wine making experience. I will be doing business with this company in the future!
This is a nice starter kit. It comes with most of what you will need to make a batch of wine. I also purchased a filter, some sanitizer (this kit comes with some cleaner packets, but not sanitizer), bottles ( you can use your own if you have enough and know how to clean and sanitize them), a bottle dryer tree and of course a wine juice kit or grapes. I purchased this kit in Nov. and waited until I used everything to leave a review.
I see where things like the auto siphon and bottle filler come in handy and are an upgrade. Cheers!
I found the product to be just as described and the individual parts of excellent quality. The price is very competitive with ither venders.
It is the ultimate kit. It does it all no need to get anything else. Superbly packaged and great quality
Answer: You have to make sure the two fins are pointing straight down and it will fit.