My marine alternator Prestolite 35214920 AYI128 series broke down and West Lancs Auto Electrics told they have ”new aftermarket replacements made to spec” - referred as ’WX7000”. The setup in my old alternator was connected to external Mastervolt regulator so I asked for an extra regulator or brush holder. Westlancs didn't see the purpose of buying an extra regulator or brush holder and wanted to make the adaption them selves after charging extra money for it. The setup was explained in details in emails and confirmed on phone and mails. Was no problem - this was promised. The price for the alternator, extra wiring and shipping came bit pricy since VAT was added to everything. Did not realize there was additional VAT because of Brexit and because it was supposed to be effective only after 1.1.2021. Order was made and product was delivered before that date. Still the extra VAT was charged. Shipment was really fast - came in 2 days to Greece! Strangely shipment had no any documentation (specifications, warranty, etc) about the alternator - none so ever - not even the receipt. Receipt was in my email for sure but needed to ask them at least to write on it what alternator was it because it said only ”Alternator”. Also the invoice is in ProForma form which is not real invoice and strangely it did not have bank account information that was sent separately. Because of Brexit was in hurry to get the alternator shipped so wired the money and was expecting to get the real invoice with the shipment. Never came. And then the other problems started. First of all the old alternator was isolated one but this ”aftermarket replacements made to spec” was not! Secondly. External wiring was not done according to our agreement for Mastervolt system but for Sterling - for example only one cable coming out for the regulator instead of two. Asked about the wiring and how it was supposed to work with Mastervolt. No reply so the same email about clearing out the wires and what was done was sent 3 times with phone calls in between because no answer for the mail - and was asked to send it again. Only aswer was the question if the wiring for Mastervolt was not working. When replied no, no further mails came. So lastly asked them to ship the actual carbon brush holder with wires that was ordered (would need to do the wiring myself even paid for it!) or get the full refund. No answer at all.  Alternator modification ”made to spec” done by West Lancs Auto Electrics included also grinding a piece off from the housing. This was bit strange and since the grinding was done uneven it did not fit on engine without some more grinding. This process has now taken more than a month because customer service is not working. True good customer service comes out when there are problems and you get help and solutions. Unfortunately with West Lanc Auto Electrics this is not the case. Would not recommend this company to anybody - unless you get lucky and get what you really ordered!  Still waiting for a solution to a problem. Or even an answer to get my money back.