We feel using a grammar checker will aid you in catching most of the glaring grammatical mistakes. It is a good tool and will help your writing. Further, two editors will edit your work. Keep your sentences concise. Try to keep their length down and give your readers a rest.
Long sentences are hard to read, and hard to understand.
If you must use a long sentence to get your point across, try to use punctuation that is appropriate to the sentence structure. If you mention a company or manufacturer in your article, give your readers' a reference. This will help them build, buy, or repair their model. Additional information such as e-mail, web site and delivery times are nice too. If you are writing about an airplane or a piece of hardware provide its specifications.