do it yourself cam

Hi i dont know if this is the correct place to post this i have just changed my cam sensor ,and i would say to anyone out their to give it a go if needed.I set out thinking this would be an ordeal but soon found i was wrong the time taken was about 1.5 hours from start to finish,but the biggest high i got was when i realised how much it had cost in total,the sensor was brought off e-bay for £13 and a new o ring £3 from mx parts inc post so a total of £16 not bad.Now thet me tell you what my local mazda garage quoted £75 +vat for diagnosis £75 +vat per hour and they wouldnt fit a used part so i make out i have saved in the region of about £225 +vat just on labour .So if any person in north staffs south chesire ever needs help just get in touch .
Regards Glyn