Can anyone give me advice on maintenance of my fixed spool reels (DAM Vsi 440 and Okuma Tritanium). There are various holes in the main body beneath the spools, are these for oil? What kind of lubricant would you suggest- 3in1, WD40, gear oil or grease? Is it safe to take off the side covers without the contents spilling out? No intructions were supplied with either reel, any help much appreciated.